Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
51 + 20 = ______
34 − 10 = ______
9 × 10 = ______
36 − 10 = ______
19 + 20 = ______
16 + 10 = ______
23 + 10 = ______
6 × 10 = ______
57 − 10 = ______
66 + 20 = ______
20 + 20 = ______
7 × 10 = ______
8 × 10 = ______
49 + 10 = ______
57 + 20 = ______
60 − 10 = ______
87 + 20 = ______
2 × 10 = ______
83 − 10 = ______
92 − 10 = ______
